#506ED9
Closest named color: Royal Blue (#4169E1). oklch(57.1% 0.167 268.8), rgb(80, 110, 217).
Aa
White text reads best on this color (4.59:1).
About this color
#506ED9 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.167 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.025 away. White text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #506ED9 |
| RGB | rgb(80, 110, 217) |
| HSL | hsl(227, 64%, 58%) |
| OKLCH | oklch(57.1% 0.167 268.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #506ED9 | 4.59:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #506ED9 | 4.57:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #506ED9 text on white | 4.59:1 | AA | Lc 71.6 | Content text, not long reading |
| #506ED9 text on black | 4.57:1 | AA | Lc -30.1 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F6
oklch(88.6% 0.042 269)
-
Step 300
300
#ACBFF2
oklch(80.8% 0.075 268.8)
-
Step 400
400
#829DEC
oklch(70.8% 0.12 268.9)
-
Step 500
500
#6382E6
oklch(63.1% 0.154 268.7)
-
Step 600
600 (this color)
#506ED9
oklch(57.1% 0.167 268.8)
-
Step 700
700
#3D57B7
oklch(49.1% 0.155 268.7)
-
Step 800
800
#334894
oklch(42.8% 0.127 268.9)
-
Step 900
900
#2C3D76
oklch(37.7% 0.099 268.8)
-
Step 950
950
#1A2445
oklch(27% 0.063 269.2)
#506ED9 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #347CDD | 0.040 |
| Deuteranopia (no green cones) | #116FD7 | 0.045 |
| Tritanopia (no blue cones) | #008799 | 0.142 |
| Achromatopsia (no color) | #757575 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506ED9
#506ED9
oklch(57.1% 0.167 268.8)
- #947300
#947300
oklch(57.2% 0.117 88.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #506ED9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.025
- Dark Periwinkle #665FD1 ΔE 0.043
- Neon Blue #4361EE ΔE 0.050
- Cerulean Blue #056EEE ΔE 0.055
- Windows Blue #3778BF ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.057
- Warm Blue #4B57DB ΔE 0.057
- Light Indigo #6D5ACF ΔE 0.058
Use #506ED9 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.